Sealing mechanism, battery pack and electric device

Abstract

The present disclosure relates to a sealing mechanism, a battery pack and an electric device. The sealing mechanism comprises a sealing piece, the sealing piece is provided with a spacer, the sealing piece is provided with a sealing surface for sealing a target piece to be sealed, and the spacer is located between the sealing surface and the target piece to be sealed to separate the sealing surface and the target piece to be sealed by a preset distance. The sealing mechanism separates the sealing surface and the target piece to be sealed by a preset distance through the spacer provided on the sealing piece, and the spacer generates a supporting and spacing effect, so that the distance between the sealing surface and the target piece to be sealed is kept at a preset distance, the consistency of assembly can be ensured, and the consistency of sealing can be ensured. The spacer is beneficial to processing and manufacturing, the processing error is small, and large fluctuations do not occur.

Description

Technical Field

[0001] This disclosure relates to the field of sealing technology, and more specifically, to a sealing mechanism, a battery pack, and an electrical device. Background Technology

[0002] In related technologies, the width of the assembly gap between the seal and the target part to be sealed is not easy to control, making assembly difficult. In addition, sealing failure is likely to occur after assembly. Utility Model Content

[0003] The purpose of this disclosure is to provide a sealing mechanism, a battery pack, and an electrical device to solve the problems in the aforementioned related technologies.

[0004] To achieve the above objectives, one aspect of this disclosure provides a sealing mechanism, comprising:

[0005] A sealing element, wherein the sealing element is provided with a spacer;

[0006] The sealing element is provided with a sealing surface for sealing the target part to be sealed, and the spacer is located between the sealing surface and the target part to be sealed, so as to separate the sealing surface and the target part to be sealed by a preset distance.

[0007] Optionally, at least a portion of the projection of the spacer in a direction perpendicular to the sealing surface falls on the sealing surface.

[0008] Optionally, the sealing mechanism further includes a sealing gasket, which is sandwiched between the sealing surface and the target component to be sealed.

[0009] Optionally, the sealing gasket is in a compressed state, and the compression rate of the sealing gasket is set to 30%-70%.

[0010] Optionally, the sealing mechanism further includes a carrier member disposed on the bottom shell, and the sealing gasket is disposed between the carrier member and the sealing surface.

[0011] Optionally, the support member is integrally formed with the bottom shell, and the support member is configured as a stepped structure protruding outward from the bottom shell.

[0012] Optionally, in a direction parallel to the sealing surface, the width of the sealing gasket is equal to the width of the carrier.

[0013] Optionally, the effective sealing width of the sealing gasket is greater than or equal to 6 mm.

[0014] Optionally, the sealing gasket is provided with a first limiting portion, and the sealing surface or the carrier is provided with a second limiting portion. The first limiting portion and the second limiting portion cooperate to restrict the movement of the sealing gasket in a direction parallel to the sealing surface.

[0015] Optionally, one of the first limiting portion and the second limiting portion is configured as a protrusion, and the other is configured as a groove, wherein the protrusion is engaged in the groove.

[0016] Optionally, the sealing gasket is provided with a first protrusion, the first protrusion protruding from the sealing gasket in a direction parallel to the sealing surface, and the first limiting portion is provided on the first protrusion.

[0017] Optionally, the carrier is provided with a second limiting part. The carrier includes a body and a second protrusion. The second protrusion protrudes from the body in a direction parallel to the sealing surface. The second limiting part is disposed on the second protrusion. The first protrusion is connected to the second protrusion.

[0018] Optionally, in a direction parallel to the sealing surface, at least a portion of the projection of the sealing gasket coincides with the projection of the spacer, so that the spacer can shield the sealing gasket.

[0019] Optionally, the spacer and the seal are integrally formed.

[0020] Optionally, the spacer is disposed at least a portion of the circumferential edge of the seal to prevent the spacer from interfering with the sealing surface.

[0021] Optionally, the spacer includes a flange connected to at least a portion of the circumferential edge of the seal, the flange being angled relative to the seal.

[0022] Optionally, the end of the flange furthest from the seal is bent inward and extends in a direction parallel to the sealing surface.

[0023] Optionally, the flange includes a first plate connected to the sealing element, the sealing element being plate-shaped, and the first plate being angled to the sealing element.

[0024] Optionally, the flange further includes a second plate, which is connected to the end of the first plate away from the seal, and the first plate and the second plate are set at an angle.

[0025] Optionally, the first plate is perpendicular to the seal; and / or,

[0026] The seal is parallel to the second plate.

[0027] Optionally, the spacer further includes a limiting plate, one end of which is connected to the sealing surface, and the other end of which is connected to the inwardly bent end of the flange.

[0028] Optionally, the spacer is provided on the circumferential edge of the seal, and the sealing mechanism further includes a sealing gasket. In a direction parallel to the sealing surface, the spacer surrounds the sealing gasket so that the spacer covers the sealing gasket.

[0029] Optionally, the spacer is provided with at least one first reinforcing part, which is used to increase the structural strength of the spacer.

[0030] Optionally, the seal is plate-shaped and has at least one second reinforcing part, which is used to increase the structural strength of the seal.

[0031] Optionally, the sealing mechanism further includes a fastener connected to the seal and used to connect to the bottom housing to link the seal to the bottom housing.

[0032] Optionally, the seal is provided with a first connecting portion, which is connected to the fastener.

[0033] Optionally, the spacer is provided with a second connecting portion, which is connected to the fastener.

[0034] Optionally, both the first connecting portion and the second connecting portion are configured as through holes, the first connecting portion and the second connecting portion are coaxially arranged, and the fastener passes through the first connecting portion and the second connecting portion and is connected to the bottom shell.

[0035] A second aspect of this disclosure also provides a battery pack, including a bottom shell, a target component to be sealed, and the sealing mechanism described above;

[0036] The sealing mechanism is connected to the bottom shell and is used to seal the target part to be sealed.

[0037] Optionally, the target component to be sealed includes a battery cell assembly or a distribution box.

[0038] Optionally, the bottom shell is provided with an inspection port, and the sealing mechanism is connected to the bottom shell and closes the inspection port.

[0039] A third aspect of this disclosure also provides an electrical device, including the sealing mechanism described above, or the battery pack described above.

[0040] The above technical solution, by using spacers on the sealing element, provides support and spacing, thereby maintaining the distance between the sealing surface and the target part to be sealed at a preset distance. This ensures assembly consistency and thus guarantees sealing consistency. Furthermore, the spacers are easy to manufacture, with minimal processing errors and minimal fluctuations.

[0041] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0042] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings:

[0043] Figure 1 This is a three-dimensional schematic diagram of the connection relationship between the sealing mechanism and the bottom shell according to one embodiment of the present disclosure.

[0044] Figure 2 This is a structural schematic diagram from one perspective of the connection relationship between the sealing mechanism and the bottom shell in one embodiment of this disclosure.

[0045] Figure 3 This is one embodiment of the present disclosure. Figure 2 A cross-sectional view of plane AA in the image.

[0046] Figure 4 This is one embodiment of the present disclosure. Figure 3 An enlarged view of position B in the middle.

[0047] Figure 5 This is a partial structural schematic diagram of the connection relationship between the sealing mechanism and the bottom shell in another embodiment of this disclosure.

[0048] Figure 6 This is a structural schematic diagram of a seal according to one embodiment of the present disclosure.

[0049] Figure 7 This is a structural schematic diagram of a seal according to one embodiment of the present disclosure from another perspective.

[0050] Figure 8 This is a structural schematic diagram of the connection relationship between the carrier and the bottom shell according to one embodiment of this disclosure.

[0051] Figure 9 This is a structural schematic diagram showing the arrangement of the sealing gasket according to one embodiment of the present disclosure.

[0052] Figure 10 This is one embodiment of the present disclosure. Figure 9 An enlarged diagram of position C in the middle.

[0053] Figure 11 This is a schematic diagram of a partial structure of a battery pack according to one embodiment of the present disclosure.

[0054] Explanation of reference numerals in the attached figures

[0055] 1. Sealing element; 11. Sealing surface; 12. Second reinforcing part; 13. First connecting part;

[0056] 2. Spacer; 21. Flanged edge; 211. First plate; 212. Second plate; 22. Limiting plate; 23. First reinforcing part; 24. Second connecting part;

[0057] 3. Bottom shell; 31. Nut;

[0058] 4. Sealing gasket; 41. First limiting part; 42. First protrusion;

[0059] 5. Supporting component; 51. Second protrusion; 52. Body; 53. Second limiting part;

[0060] 6. Fasteners. Detailed Implementation

[0061] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0062] In this disclosure, unless otherwise stated, "inner" and "outer" refer to the inner and outer parts of the relevant components. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0063] In the description of this disclosure, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can be a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0064] The target component to be sealed is covered and sealed by a sealant to achieve a sealing effect. In related technologies, the width of the assembly gap between the sealant and the target component is difficult to control, making assembly difficult and prone to seal failure after assembly. Specifically, the sealant and the base shell are often assembled using bolts and nuts, and the riveting height of the nuts is difficult to control during the manufacturing process, leading to errors in the width of the assembly gap. In such cases, placing a gasket between the sealant and the target component can result in the gasket not being effectively compressed, thus affecting the sealing performance.

[0065] Therefore, such as Figures 1-10 As shown, one aspect of this disclosure provides a sealing mechanism, including a seal 1.

[0066] The seal 1 is provided with a spacer 2.

[0067] The sealing element 1 is provided with a sealing surface 11 for sealing the target part to be sealed, and the spacer 2 is located between the sealing surface 11 and the target part to be sealed, so as to separate the sealing surface 11 and the target part to be sealed by a preset distance.

[0068] In the above technical solution, by setting a spacer 2 on the sealing element 1 and connecting the spacer 2 to the bottom shell, the spacer 2 provides a supporting and spacing function, thereby maintaining the distance between the sealing surface 11 and the target part to be sealed at a preset distance. This ensures the consistency of assembly and thus the consistency of the seal, preventing seal failure. Furthermore, the spacer 2 is easy to manufacture, with small processing errors and minimal fluctuations.

[0069] Optionally, in one embodiment of this disclosure, at least a portion of the projection of the spacer 2 in the direction perpendicular to the sealing surface 11 falls on the sealing surface 11. By at least partially placing the spacer 2 within the sealing range of the seal 1, the sealing performance requirements between the seal 1 and the target component to be sealed can be guaranteed without increasing the lateral space occupied by the seal 1 or affecting the relevant layout requirements of the target component to be sealed.

[0070] In some examples, the projection of all spacers 2 falls on the sealing surface 11 in the direction perpendicular to the sealing surface 11; that is, in the direction perpendicular to the sealing surface 11, spacers 2 do not protrude from the sealing element 1. In other examples, the projection of some spacers 2 falls on the sealing surface 11 in the direction perpendicular to the sealing surface 11; that is, in the direction perpendicular to the sealing surface 11, some spacers 2 do not protrude from the sealing element 1.

[0071] Optionally, in one embodiment of this disclosure, the sealing mechanism further includes a sealing gasket 4, which is sandwiched between the sealing surface 11 and the target component to be sealed. The sealing gasket 4 provides a better seal, effectively isolating water, air, and other contaminants.

[0072] It should be noted that for the sealing gasket 4 to achieve a seal, it needs to be kept under compression and maintain a certain compression ratio; otherwise, a seal cannot be achieved. In related technologies, where the width of the assembly gap between the sealing element 1 and the target part to be sealed is difficult to control, after the sealing element 1 is assembled with the bottom shell 3, the compression ratio of the sealing gasket 4 between the sealing element 1 and the target part to be sealed will be affected, resulting in the sealing gasket 4 not being fully compressed and thus failing to achieve a seal. However, by using the spacer 2, the distance between the sealing surface 11 and the target part to be sealed is maintained at a preset distance. After clamping the sealing gasket 4, the compression force on the sealing gasket 4 remains consistent, thereby ensuring a consistent compression ratio of the sealing gasket 4, guaranteeing a seal, and preventing seal failure.

[0073] Optionally, in one embodiment of this disclosure, the sealing gasket 4 is in a compressed state, and the compression rate of the sealing gasket 4 is set to 30%-70%. This setting ensures that the sealing gasket 4 is compressed, producing a sealing effect. The preset distance can be the thickness value of the sealing gasket 4 after compression. It should be noted that the compression rate of the sealing gasket 4 can be set according to the sealing performance requirements of different products, and is not limited here. However, within the same product, to ensure consistent sealing performance, the compression rate of the sealing gasket 4 for each product can remain approximately the same. That is, minor differences within a margin of error are permissible and do not affect the overall sealing consistency of each product, thus avoiding sealing failure.

[0074] Optionally, in one embodiment of this disclosure, the sealing mechanism further includes a support member 5, which is disposed on the bottom shell 3, and a sealing gasket 4 is disposed between the support member 5 and the sealing surface 11. The support member 5 supports the sealing gasket 4, and the support member 5 and the sealing surface 11 clamp the sealing gasket 4, generating a compression effect, thereby compressing the sealing gasket 4. The inclusion of the support member 5 can reduce the thickness of the sealing gasket 4, thereby reducing costs. At the same time, the support member 5 can also play a misalignment role, improving the sealing performance.

[0075] It is understandable that the carrier 5 is set on the bottom shell 3. When the seal 1 is placed on the target part to be sealed, the carrier 5 can block the gap between the seal 1 and the target part to be sealed, thereby improving the sealing performance and achieving better waterproofing and other performance.

[0076] The support member 5 is located on the side of the bottom shell 3 facing the sealing surface 11. The support member 5 can occupy a part of the side of the bottom shell 3 facing the sealing surface 11. The spacer 2 is connected to the other part of the side of the bottom shell 3 facing the sealing surface 11. The spacer 2 can ensure the distance between the support member 5 and the sealing surface 11.

[0077] In some examples, the support member 5 can be integrally formed with the bottom shell 3, and the support member 5 can be a stepped structure protruding outward from the bottom shell 3. Of course, in other examples, the support member 5 can also be a structure that is later attached to the bottom shell 3.

[0078] The compression ratio of the sealing gasket 4 can be calculated by dividing the distance h3 between the carrier 5 and the sealing surface 11 by the initial thickness d of the sealing gasket 4. The distance h3 between the carrier 5 and the sealing surface 11 can be calculated by subtracting the length h2 of the carrier 5 from the length h1 of the spacer 2 in the direction perpendicular to the sealing surface 11. It can be understood that during assembly, the sealing gasket 4 is placed on the carrier 5, and then the sealing element 1 is placed on top of the sealing gasket 4. The spacer 2 is connected to the bottom shell 3, creating pressure on the sealing gasket 4, thus compressing it.

[0079] In the related technology, the sealing gasket 4 is connected and cooperates with the bottom shell 3 and the sealing element 1. Holes are made on the sealing gasket 4 so that the bottom shell 3 and the sealing element 1 can be connected. Therefore, the width of the sealing gasket 4 needs to be set to be relatively wide to ensure the effective sealing width of the sealing gasket 4.

[0080] However, in this embodiment, the width of the sealing gasket 4 is equal to the width of the support member 5 in the direction parallel to the sealing surface 11. By setting it in this way, the width of the sealing gasket 4 can be reduced while ensuring sealing performance, thus saving costs.

[0081] It is understandable that by cooperating with the bearing member 5 and the sealing gasket 4, the bearing member 5 and the sealing surface 11 clamp the sealing gasket 4. The sealing gasket 4 can be omitted at other locations on the bottom shell 3 and on the target part to be sealed. Other locations on the bottom shell 3 cooperate with the spacer 2 and are connected and fixed to the sealing member 1. Therefore, the sealing gasket 4 does not need to have holes, and its width does not need to be too large, while ensuring the effective sealing width of the sealing gasket 4. In some examples, the effective sealing width L of the sealing gasket 4 is greater than or equal to 6 mm. Of course, in other examples, the width of the sealing gasket 4 can also be slightly larger than the width of the bearing member 5. It should be noted that the effective sealing width L refers to the width of the overlapping portion of the sealing gasket 4 and the bearing member 5 in the direction perpendicular to the sealing surface 11. Figure 4 and Figure 5 As shown.

[0082] Optionally, in one embodiment of this disclosure, the sealing gasket 4 is provided with a first limiting portion 41, and the sealing surface 11 or the carrier 5 is provided with a second limiting portion 53. The first limiting portion 41 and the second limiting portion 53 cooperate to restrict the movement of the sealing gasket 4 in a direction parallel to the sealing surface 11. Through the cooperation of the first limiting portion 41 and the second limiting portion 53, the sealing gasket 4 can be limited, ensuring the assembly position of the sealing gasket 4, so that the sealing gasket 4 is clamped between the carrier 5 and the sealing surface 11, ensuring effective sealing.

[0083] The second limiting part 53 can be provided on the sealing surface 11 or the carrier 5 as needed. It can be understood that when the second limiting part 53 is provided on the carrier 5, the sealing gasket 4 can be placed on the carrier 5 for limiting. When the second limiting part 53 is provided on the sealing surface 11, the sealing gasket 4 can be assembled and positioned with the sealing element 1 first, and then assembled with the carrier 5.

[0084] Optionally, in one embodiment of this disclosure, one of the first limiting part 41 and the second limiting part 53 is configured as a protrusion, and the other is configured as a groove, with the protrusion engaging with the groove. By engaging the protrusion with the groove, a positioning function is achieved, preventing movement. In some examples, the first limiting part 41 is configured as a groove, and the second limiting part 53 is configured as a protrusion. In other examples, the first limiting part 41 is configured as a protrusion, and the second limiting part 53 is configured as a groove.

[0085] The number of the first limiting part 41 and the second limiting part 53 can be multiple, and they can be spaced apart along the continuing direction of the sealing gasket 4 to ensure the limiting function.

[0086] Optionally, in another embodiment of this disclosure, both the first limiting part 41 and the second limiting part 53 can be optical holes, which are interconnected, and positioning is achieved by inserting a positioning pin through the optical holes. Alternatively, one of the first limiting part 41 and the second limiting part 53 can be configured as an annular stop plate, and the other can be configured as a side edge, with the annular stop plate fitting against the corresponding side edge to achieve limiting.

[0087] To ensure the sealing performance of the gasket 4, optionally, in one embodiment of this disclosure, the gasket 4 is provided with a first protrusion 42, which protrudes from the gasket 4 in a direction parallel to the sealing surface 11, and a first limiting portion 41 is provided on the first protrusion 42. The first limiting portion 41 is provided by the first protrusion 42 without affecting the sealing performance of the main structure of the gasket 4. In some examples, the first protrusion 42 is integrally formed with the gasket 4.

[0088] Optionally, in one embodiment of this disclosure, the carrier 5 is provided with a second limiting part 53. The carrier 5 includes a body 52 and a second protrusion 51. The second protrusion 51 protrudes from the body 52 in a direction parallel to the sealing surface. The second limiting part 53 is disposed on the second protrusion 51. The first protrusion 42 is connected to the second protrusion 51.

[0089] The second protrusion 51 is adapted to the first protrusion 42, thereby facilitating the connection between the first limiting part 41 and the second limiting part 53 and achieving the limiting function. The second protrusion 51 can be integrally formed with the body 52.

[0090] Alternatively, in another embodiment of this disclosure, the first limiting part 41 may be provided on the sealing gasket 4, that is, the first protrusion 42 is not provided. Correspondingly, the second limiting part 53 may be provided on the carrier 5, and the receiving member is not provided with the second protrusion 51.

[0091] Optionally, the spacer 2 and the seal 1 are integrally formed.

[0092] Optionally, in one embodiment of this disclosure, at least a portion of the projection of the sealing gasket 4 coincides with the projection of the spacer 2, so that the spacer 2 can shield the sealing gasket 4. By shielding the sealing gasket 4 with the spacer 2, protection of the sealing gasket 4 can be achieved, preventing damage caused by impacts from external foreign objects, thereby ensuring sealing performance. It is understood that in the direction parallel to the sealing surface 11, the spacer 2 is located outwards, and the sealing gasket 4 is located inwards. Here, inwards and outwards refer to the outermost position relative to the sealing element 1, where the outermost position is located outside the sealing element 1.

[0093] Optionally, in one embodiment of this disclosure, the spacer 2 is disposed at least on a portion of the circumferential edge of the seal 1 to prevent the spacer 2 from interfering with the sealing surface 11. Specifically, depending on design requirements, the spacer 2 can be disposed at a corresponding edge position of the seal 1, with the spacer 2 close to the edge, so that the spacer 2 does not interfere with the sealing surface 11 of the seal 1, thus ensuring the sealing area. In some examples, the spacer 2 can be connected to the sealing surface 11 near the edge of the seal 1; in other examples, the spacer 2 can be connected to the side of the seal 1.

[0094] Optionally, in one embodiment of this disclosure, spacers 2 are provided along the circumferential edges of the sealing member 1, and the sealing mechanism further includes a sealing gasket 4. The spacers 2 surround the sealing gasket 4 in a direction parallel to the sealing surface 11, so that the spacers 2 shield the sealing gasket 4. This arrangement provides protection for all four sides of the sealing gasket 4. Compared to protection in only one direction, this more effectively and comprehensively avoids the risk of damage to the sealing gasket 4 caused by impact from foreign objects, thus improving the protection of the sealing gasket 4.

[0095] It should be noted that in some other embodiments, spacers 2 may be provided on the edge of the corresponding seal 1, depending on the design requirements.

[0096] Optionally, in one embodiment of this disclosure, the spacer 2 includes a flange 21, which is connected to at least a portion of the circumferential edge of the seal 1, and the flange 21 is angled to the seal 1.

[0097] In this design, the flange 21 is angled relative to the seal 1. The flange 21 is flipped towards the target part to be sealed, allowing it to connect with the bottom shell 3 when the seal 1 covers the target part, providing support. The flange 21 can be an extension of the edge of the seal 1, without damaging its original structure, ensuring a sealing effect and facilitating manufacturing. In some examples, the flange 21 is integrally formed with the seal 1. In other examples, the flange 21 can be welded to the edge of the seal 1.

[0098] Alternatively, in another embodiment of this disclosure, the spacer 2 includes a spacer strip connected to the sealing surface 11, the spacer strip being close to the edge of the sealing member 1 and parallel to the edge of the sealing member 1.

[0099] Alternatively, in one embodiment of this disclosure, the end of the flange 21 away from the seal 1 is bent inward and extends in a direction parallel to the sealing surface 11.

[0100] In this process, the flange 21 extends towards the target part to be sealed and then bends and extends inward. It can be understood that the flange 21 itself bends inward, which means it bends towards the sealing area of ​​the sealing part 1. After bending, the flange 21 extends for a certain length. The bent side of the flange 21 can be used to connect with the bottom shell 3, which can increase the contact area between the flange 21 and the bottom shell 3 and improve the connection stability between the flange 21 and the bottom shell 3.

[0101] Alternatively, in another embodiment of this disclosure, one end of the flange 21 is connected to the edge of the seal 1, and the other end of the flange 21 extends toward the target to be sealed and is used to connect with the bottom shell 3. That is, the flange 21 is no longer bent.

[0102] Optionally, in one embodiment of this disclosure, the flange 21 includes a first plate 211, which is connected to the seal 1. The seal 1 is plate-shaped, and the first plate 211 and the seal 1 are arranged at a first angle.

[0103] One end of the first plate 211 can be connected to the seal 1, and the first plate 211 can extend along the edge of the seal 1. The other end of the first plate 211 can be connected to the bottom shell 3. The first plate 211 forms a first angle with the seal 1, allowing the first plate 211 to extend towards the target part to be sealed and connect with the bottom shell 3. It should be noted that the first angle can be set according to design requirements; that is, the tilt direction of the first plate 211 relative to the seal 1 can be set as needed. In some examples, the first plate 211 and the seal 1 are integrally formed, and an arc transition can be provided at the connection between the first plate 211 and the seal 1.

[0104] Optionally, in one embodiment of this disclosure, the flange 21 further includes a second plate 212, which is connected to the end of the first plate 211 away from the seal 1, and the first plate 211 and the second plate 212 are arranged at a second angle.

[0105] One end of the second plate 212 can be connected to the end of the first plate 211 away from the seal 1. In other words, the second plate 212 is a further extension of the first plate 211, extending inwards. One side of the second plate 212 is used to connect with the bottom shell 3. The first plate 211 and the second plate 212 form a first angle, meaning the second plate 212 is bent relative to the first plate 211, allowing it to extend inwards. It should be noted that the second angle can be set according to design requirements; that is, the tilt direction of the second plate 212 relative to the first plate 211 can be set as needed. In some examples, the second plate 212 and the first plate 211 are integrally formed, and an arc-shaped transition can be provided at the connection point between the second plate 212 and the first plate 211.

[0106] The first angle and the second angle can be set according to actual needs, so that the tilt directions of the first plate 211 and the second plate 212 are different. Optionally, in one embodiment of this disclosure, the first angle is set to 90°. That is, the first plate 211 is perpendicular to the sealing member 1, thereby improving the support of the flange 21 after it is connected to the bottom shell 3.

[0107] Alternatively, in another embodiment of this disclosure, the second angle is set to 90°. That is, the first plate 211 is perpendicular to the second plate 212, and the seal 1 is parallel to the second plate 212.

[0108] Optionally, in another embodiment of this disclosure, the first angle is set to 90° and the second angle is set to 90°. That is, the first plate 211 is perpendicular to the seal 1, the first plate 211 is perpendicular to the second plate 212, and the second plate 212 is parallel to the sealing surface 11. This facilitates the surface-to-surface connection between the second plate 212 and the bottom shell 3, and also improves the support of the flange 21 after it is connected to the bottom shell 3. Of course, in other examples, the first angle and the second angle can also be 30°, 45°, 60°, 120°, etc., and can be set as needed. No further restrictions are imposed here.

[0109] Optionally, in one embodiment of this disclosure, the spacer 2 further includes a limiting plate 22, one end of which is connected to the sealing surface 11, and the other end of which is connected to the inwardly bent end of the flange 21. By connecting the limiting plate 22 to the sealing surface 11 and the flange 21, the support between the spacer 2 and the bottom shell 3 can be further improved, thereby enhancing stability.

[0110] The limiting plate 22 can be connected to the end of the second plate 212 away from the first plate 211. The limiting plate 22 can be set at a third angle to the second plate 212, which can be 90°, meaning the limiting plate 22 can be perpendicular to the second plate 212. Of course, the third angle can also be set to other angles, such as 30°, 60°, etc. No further restrictions are imposed here. In some examples, the limiting plate 22 and the second plate 212 can be integrally formed.

[0111] Optionally, in one embodiment of this disclosure, the spacer 2 is provided with at least one first reinforcing part 23. The first reinforcing part 23 can increase the structural strength of the spacer 2 and improve its stability, while preventing the spacer 2 from deforming. The deformation force of the spacer 2 needs to be greater than the elastic force of the sealing gasket 4. That is, when the sealing gasket 4 is compressed, the spacer 2 does not deform.

[0112] The first reinforcing part 23 can be multiple, and these multiple first reinforcing parts 23 are spaced apart in the extending direction of the spacer 2 to improve the overall structural strength of the spacer 2. Of course, the number of first reinforcing parts 23 can be set as needed, and is not limited here. In some examples, the first reinforcing part 23 is set as a first reinforcing rib. In other examples, the first reinforcing part 23 can be a support plate connected to the spacer 2.

[0113] Optionally, in one embodiment of this disclosure, the sealing element 1 is plate-shaped, with at least one second reinforcing part 12 provided in the middle of the sealing element 1, and the spacer 2 located at the edge of the sealing element 1. This arrangement improves the structural strength and impact resistance of the sealing element 1, ensuring a tight seal when subjected to impacts such as ball strikes. The spacer 2, being close to the edge of the sealing element 1, does not affect its sealing function, while also reinforcing the edge of the sealing element 1, further enhancing its impact resistance and ensuring a tight seal. It is understood that the sealing surface 11 is one side of the sealing element 1, and the sealing surface 11 covers the target part to be sealed.

[0114] The second reinforcing part 12 prevents the seal 1 from being a flat plate surface, thus improving the structural strength of the seal 1. Multiple second reinforcing parts 12 can be arranged at intervals on the seal 1 to enhance the overall structural strength. The number of second reinforcing parts 12 can be set as needed, without further limitation. In some examples, the second reinforcing part 12 is a second reinforcing rib. In other examples, the second reinforcing part 12 can be a support plate connected to the seal 1.

[0115] Optionally, in one embodiment of this disclosure, the sealing mechanism further includes a fastener 6, which is connected to the sealing element 1 and is used to connect to the bottom shell 3 to connect the sealing element 1 and the bottom shell 3. The fastener 6 secures the sealing element 1 and the bottom shell 3 together, compressing and clamping the sealing gasket 4 to ensure a tight seal.

[0116] The fasteners 6 can be multiple, and multiple fasteners 6 are spaced apart. Multiple fasteners 6 connect the seal 1 and the bottom shell 3 at different locations, which improves the connection stability and also ensures the compression effect on the sealing gasket 4 at different locations.

[0117] Optionally, in one embodiment of this disclosure, the sealing member 1 is provided with a first connecting portion 13, which is connected to the fastener 6. The first connecting portion 13 facilitates the installation of the fastener 6, enabling the fastener 6 to be assembled and fixed. The first connecting portion 13 can correspond to the fastener 6; that is, the number of first connecting portions 13 can be the same as the number of fasteners 6, with one fastener 6 corresponding to one first connecting portion 13.

[0118] Optionally, in one embodiment of this disclosure, the spacer 2 is provided with a second connecting portion 24, which is connected to the fastener 6. The second connecting portion 24 allows the fastener 6 to also connect to the spacer 2, improving the connection strength between the spacer 2 and the bottom shell 3. This ensures the spacer 2 maintains its spacing function, facilitating the creation of a predetermined distance between the sealing element 1 and the target element to be sealed, thus guaranteeing the consistency of the predetermined distance.

[0119] Optionally, in one embodiment of this disclosure, both the first connecting part 13 and the second connecting part 24 are configured as through holes, the first connecting part 13 and the second connecting part 24 are coaxially arranged, and the fastener 6 passes through the first connecting part 13 and the second connecting part 24 and is connected to the bottom shell 3.

[0120] The second connecting portion 24 can be disposed on the second plate 212, which is opposite to the sealing surface 11. This connects the first connecting portion 13 and the second connecting portion 24, allowing the fastener 6 to pass through. In some examples, the fastener 6 can be a bolt, which passes through the first connecting portion 13 and the second connecting portion 24. A threaded hole or nut can be provided on the bottom shell 3 to connect the bolt to the bottom shell 3. The second connecting portion 24 can also accommodate a nut, allowing part of the nut to be disposed within the second connecting portion 24. This facilitates control of the spacing, ensuring that the distance between the sealing surface 11 and the target part to be sealed reaches a preset distance.

[0121] Alternatively, in another embodiment of this disclosure, the first connecting part 13 and the second connecting part 24 may be plates. The first connecting part 13 thickens a portion of the seal 1, and the second connecting part 24 thickens a portion of the spacer 2. The fastener 6 may be a clamping mechanism. The fastener 6 is connected to the first connecting part 13 and the second connecting part 24, which can prevent the seal 1 and the spacer 2 from deforming.

[0122] like Figure 11 As shown, a second aspect of this disclosure also provides a battery pack, including a bottom shell 3, a target component to be sealed, and the aforementioned sealing mechanism. The sealing mechanism is connected to the bottom shell 3 and is used to seal the target component to be sealed. The sealing mechanism is capable of sealing at least a portion of the bottom shell 3, and the target component to be sealed can be disposed on the bottom shell 3.

[0123] Alternatively, in one embodiment of this disclosure, the target component to be sealed includes a battery cell assembly or a distribution box.

[0124] Optionally, in one embodiment of this disclosure, the bottom shell 3 is provided with an inspection port, and a sealing mechanism is connected to the bottom shell 3 and closes the inspection port. The sealing mechanism primarily seals the inspection port; the sealing element 1 closes the inspection port, preventing it from being exposed. When maintenance is required, the sealing element 1 can be removed for operation. The carrier 5 can be integrally formed with the surface of the bottom shell 3 where the inspection port is located and can cooperate with the sealing gasket 4.

[0125] A third aspect of this disclosure also provides an electrical device, including the aforementioned sealing mechanism or the aforementioned battery pack. The electrical device may be a vehicle.

[0126] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0127] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0128] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. A sealing mechanism, characterized in that, include: A sealing element, wherein the sealing element is provided with a spacer; The sealing element is provided with a sealing surface for sealing the target part to be sealed, and the spacer is located between the sealing surface and the target part to be sealed, so as to separate the sealing surface and the target part to be sealed by a preset distance.

2. The sealing mechanism according to claim 1, characterized in that, At least a portion of the projection of the spacer in a direction perpendicular to the sealing surface falls on the sealing surface.

3. The sealing mechanism according to claim 1, characterized in that, The sealing mechanism further includes a sealing gasket, which is sandwiched between the sealing surface and the target component to be sealed.

4. The sealing mechanism according to claim 3, characterized in that, The sealing gasket is in a compressed state, and the compression rate of the sealing gasket is set to 30%-70%.

5. The sealing mechanism according to claim 3, characterized in that, The sealing mechanism further includes a carrier component, which is disposed on the bottom shell, and the sealing gasket is disposed between the carrier component and the sealing surface.

6. The sealing mechanism according to claim 5, characterized in that, The support member is integrally formed with the bottom shell, and the support member is configured as a stepped structure that protrudes outward from the bottom shell.

7. The sealing mechanism according to claim 5, characterized in that, In a direction parallel to the sealing surface, the width of the sealing gasket is equal to the width of the carrier.

8. The sealing mechanism according to claim 5, characterized in that, The effective sealing width of the sealing gasket is greater than or equal to 6 mm.

9. The sealing mechanism according to claim 5, characterized in that, The sealing gasket is provided with a first limiting part, and the sealing surface or the carrier is provided with a second limiting part. The first limiting part and the second limiting part cooperate to restrict the movement of the sealing gasket in a direction parallel to the sealing surface.

10. The sealing mechanism according to claim 9, characterized in that, One of the first limiting part and the second limiting part is configured as a protrusion, and the other is configured as a groove, wherein the protrusion is inserted into the groove.

11. The sealing mechanism according to claim 9, characterized in that, The sealing gasket is provided with a first protrusion, which protrudes from the sealing gasket in a direction parallel to the sealing surface, and a first limiting part is provided on the first protrusion.

12. The sealing mechanism according to claim 11, characterized in that, The carrier is provided with a second limiting part. The carrier includes a body and a second protrusion. The second protrusion protrudes from the body in a direction parallel to the sealing surface. The second limiting part is disposed on the second protrusion. The first protrusion is connected to the second protrusion.

13. The sealing mechanism according to claim 3, characterized in that, In a direction parallel to the sealing surface, at least a portion of the projection of the sealing gasket coincides with the projection of the spacer, so that the spacer can shield the sealing gasket.

14. The sealing mechanism according to claim 1, characterized in that, The spacer and the seal are integrally formed.

15. The sealing mechanism according to claim 1, characterized in that, The spacer is disposed at least a portion of the circumferential edge of the seal to prevent the spacer from interfering with the sealing surface.

16. The sealing mechanism according to claim 15, characterized in that, The spacer includes a flange connected to at least a portion of the circumferential edge of the seal, the flange being angled relative to the seal.

17. The sealing mechanism according to claim 16, characterized in that, The flange is bent inward at the end away from the seal and extends in a direction parallel to the sealing surface.

18. The sealing mechanism according to claim 16, characterized in that, The flange includes a first plate, which is connected to the sealing element. The sealing element is plate-shaped, and the first plate and the sealing element are set at an angle.

19. The sealing mechanism according to claim 18, characterized in that, The flange also includes a second plate, which is connected to the end of the first plate away from the seal, and the first plate and the second plate are set at an angle.

20. The sealing mechanism according to claim 19, characterized in that, The first plate is perpendicular to the seal; and / or, The seal is parallel to the second plate.

21. The sealing mechanism according to claim 17, characterized in that, The spacer also includes a limiting plate, one end of which is connected to the sealing surface, and the other end of which is connected to the end of the flange that is bent inward.

22. The sealing mechanism according to claim 15, characterized in that, The spacers are provided along the circumferential edges of the seal, and the sealing mechanism also includes a sealing gasket. In a direction parallel to the sealing surface, the spacers surround the sealing gasket so that the spacers cover the sealing gasket.

23. The sealing mechanism according to claim 1, characterized in that, The spacer is provided with at least one first reinforcing part, which is used to increase the structural strength of the spacer.

24. The sealing mechanism according to claim 1, characterized in that, The sealing element is plate-shaped and has at least one second reinforcing part, which is used to increase the structural strength of the sealing element.

25. The sealing mechanism according to any one of claims 1-24, characterized in that, The sealing mechanism further includes a fastener connected to the seal and used to connect to the bottom shell to link the seal to the bottom shell.

26. The sealing mechanism according to claim 25, characterized in that, The sealing element is provided with a first connecting part, which is connected to the fastener.

27. The sealing mechanism according to claim 26, characterized in that, The spacer is provided with a second connecting part, which is connected to the fastener.

28. The sealing mechanism according to claim 27, characterized in that, Both the first connecting part and the second connecting part are configured as through holes. The first connecting part and the second connecting part are coaxially arranged. The fastener passes through the first connecting part and the second connecting part and is connected to the bottom shell.

29. A battery pack, characterized in that, Includes a bottom shell, a target component to be sealed, and a sealing mechanism as described in any one of claims 1-28; The sealing mechanism is connected to the bottom shell and is used to seal the target part to be sealed.

30. The battery pack according to claim 29, characterized in that, The target component to be sealed includes a battery cell assembly or a distribution box.

31. The battery pack according to claim 29, characterized in that, The bottom shell is provided with an inspection port, and the sealing mechanism is connected to the bottom shell and closes the inspection port.

32. An electrical appliance, characterized in that, It includes the sealing mechanism as described in any one of claims 1-28, or the battery pack as described in any one of claims 29-31.

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